The only existing problem is ____ we can find this special wood in the forest in such a short time.

I hear that Huang Gang made an Englishspeech contest last week.—____________and ___________.

一Ready to give up guessing，Sandy?一No，no，hold on! I think I______ at the answer now．

.—His father ______an actor , didn’t he —Yes, he did.

With more forests being destroyed，hugequantities of good earth ______ each year